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- Title
Sensibilidad in vitro de dos especies de Sclerotinia spp. y Sclerotium cepivorum a agentes de control biológico y fungicidas.
- Authors
Moreno, Luis Pérez; Belmonte Vargas, José Roberto; Núñez Palenius, Héctor Gordon; Mendoza, Rafael Guzmán; Celedón, Briseida Mendoza
- Abstract
The in vitro response of two Sclerotinia minor-, five S. sclerotiorum- and two Sclerotium cepivorum-isolates to 16 biological control agents and eight fungicides was evaluated. A split plot experimental design was used, with a factorial arrangement correction for each pathogen. Factor A corresponded to fungi isolates and Factor B to control agents. The comparison of means was carried out using a Tukey test (P<0.05), having 11 evaluations every 24 h of the Mycelial radial growth rates (Mrgr). In any case no effect was found, alone or in interactions with control agents. Dicloran, Benomyl, Tebuconazole and Cyprodinil- Fludioxonil inhibited the mycelial growth of all fungi with a final average of 1.0 Mrgr, and in greater proportion than biological agents (BA). The BA that propitiated the lesser mycelial growth towards S. minor were: Microorganisms (BPGPlus), Trichoderma sp. (Trichoderma), T. viride (Esporalis) and Bacillus subtillis (Serenade max); with isolates of S. sclerotiorum, Trichoderma sp. (Trichoderma), Trichoderma harzianum (Natucontrol), Microorganisms (BPG-Plus) and T. harzianum (Biotricho-H), with a Mrgr of 1.48, 1.56, 2.35 and 2.53, respectively. For S. cepivorum, the best management was obtained with Trichoderma sp. (Trichoderma), T. viride (Esporalis), T. harzianum (Natucontrol) and Microorganisms (BPG-plus), with a Mrgr of 1.03, 1.73, 2.55 and 2.70, respectively. In summary, Thichoderma sp. and Microorganisms were the most consistents in their ability to inhibit the three pathogens.
- Subjects
SCLEROTINIA; SCLEROTIUM cepivorum; FUNGICIDES; BIOLOGICAL control of plant diseases; DICLORAN; TRICHODERMA; TREATMENT of fungal diseases of plants
- Publication
Revista Mexicana de Fitopatología, 2015, Vol 33, Issue 2, p256
- ISSN
0185-3309
- Publication type
Article